Control of a non-isothermal continuous stirred tank reactor by a feedback-feedforward structure using type-2 fuzzy logic controllers
Control of a non-isothermal continuous stirred tank reactor by a feedback-feedforward structure using type-2 fuzzy logic controllers
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DOI：
10.1016/j.ins.2011.03.023
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发表时间：
2011-09
期刊：
影响因子：
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通讯作者：
M. Galluzzo;B. Cosenza
中科院分区：
文献类型：
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作者：
M. Galluzzo;B. Cosenza
提出了一种使用2型模糊逻辑控制器（FLC）的控制系统，用于控制非等温连续搅拌釜式反应器（CSTR），其中发生一阶不可逆反应，其特征在于存在分叉。由于参数变化引起的分叉会使反应器不稳定或产生新的工作条件，这些条件虽然稳定，但却是不可接受的。对无控CSTR动态特性进行了广泛的分析，并用于控制结构的选择和控制器的开发。除了反馈控制器之外，还需要引入前馈控制回路，以在存在干扰的情况下保持有效的控制。仿真结果证实了2型FLC的有效性和鲁棒性，特别是当系统存在不确定性时，其性能优于1型FLC。
A control system that uses type-2 fuzzy logic controllers (FLC) is proposed for the control of a non-isothermal continuous stirred tank reactor (CSTR), where a first order irreversible reaction occurs and that is characterized by the presence of bifurcations. Bifurcations due to parameter variations can bring the reactor to instability or create new working conditions which although stable are unacceptable. An extensive analysis of the uncontrolled CSTR dynamics was carried out and used for the choice of the control configuration and the development of controllers. In addition to a feedback controller, the introduction of a feedforward control loop was required to maintain effective control in the presence of disturbances. Simulation results confirmed the effectiveness and the robustness of the type-2 FLC which outperforms its type-1 counterpart particularly when system uncertainties are present.